<u><em>Answer: Formation differs in that protostomes form a coelom when the mesoderm splits, whereas the deuterostomes form a coelom when mesoderm cells combine, resulting in the body cavity. This formation occurs during the gastrula, or three-layered structure stage of development.</em></u>
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<u><em>Explanation:</em></u>
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<span>An ecosystem consists of a population of organisms and its
physical environment, and a population is made up of many different
communities of organisms. Every one of the creatures of similar species
living together that live in a particular biological system are known
as a populace The people in the populace contend with one another for
sustenance, settling space, and mates.</span>
Answer:
I the organelle goes to the second row on the left
